Functionalized Magnetic Nanoparticles and Their Effect on <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>

Darwish, Mohamed S. A.; Nguyen, Nhung H. A.; Ševců, Alena; Stibor, Ivan

doi:10.1155/2015/416012

Cited by 52 publications

(23 citation statements)

References 53 publications

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“…The evaluation of the literature on Fe 3 O 4 activity in relation to S. aureus showed a variety of methodologies and results. 14,16,19,20,65,66 In our work, the broth microdilution method using UV 67 was initially tested, however, the results were not reproducible. Alternatively, the use of the agar dilution method 39 proved to be more reliable and reproducible.…”

Section: Characterization Of Liposomesmentioning

confidence: 92%

Preparation of Magnetoliposomes with a Green, Low-Cost, Fast and Scalable Methodology and Activity Study against S. aureus and C. freundii Bacterial Strains

Silva

Lara

López

et al. 2018

J. Braz. Chem. Soc.

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A novel, fast, low-cost and scalable methodology to prepare stable magnetoliposomes (MGLs), without the use of organic solvents, is described. The concept of the work is based on the dual use of soy lecithin associated to a new liposome preparation methodology. Soy lecithin was used to coat the nanoparticles of magnetite (Fe 3 O 4 @lecithin) and for encapsulation of Fe 3 O 4 @lecithin (Lip-Fe 3 O 4 @lecithin). Liposomes with size less than 160 nm, polydispersity index of 0.25 and zeta potential of-41 mV, were prepared with the use of autoclave and sonication. The liposomal formulations containing magnetite and stigmasterol (Lip-Fe 3 O 4 @lecithin, Lip-Stigma and Lip-Stigma-Fe 3 O 4 @lecithin) were shown to be promising for the application as antibacterial. The liposomal formulation and magnetite were characterized by the following techniques: conventional and high-resolution transmission electron microscopy (TEM/HRTEM), energy-filtered transmission electron microscopy (EFTEM), proton nuclear magnetic resonance (1 H NMR), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRPD), dynamic light scattering (DLS) and zeta potential. The Lip-Fe 3 O 4 @lecithin had a minimum inhibitory concentration (MIC) of 8.4 μg mL-1 in the presence of 200 Oe magnetic field against S. aureus.

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Section: Characterization Of Liposomesmentioning

confidence: 92%

Preparation of Magnetoliposomes with a Green, Low-Cost, Fast and Scalable Methodology and Activity Study against S. aureus and C. freundii Bacterial Strains

Silva

Lara

López

et al. 2018

J. Braz. Chem. Soc.

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“…Iron oxide magnetic nanoparticles (MNPs) were prepared by co‐precipitation process in the presence of ammonium hydroxide. Surface functionalizing of the magnetic particles was then done using PEI, APTS, PEG, and TEOS . At the first place, FeCl 2 .4H 2 O (1.9g) and FeCl 3 .6H 2 O (5.4g) were dissolved in deionized water (100 mL) by mechanical stirring for 1 h. Calculated amount of PEI (4g), APTS (4.5g), PEG (2.5g), and TEOS (3g) were then added to the mixture under continuous stirring.…”

Section: Methodsmentioning

confidence: 99%

Electrospun functionalized magnetic polyamide 6 composite nanofiber: Fabrication and stabilization

et al. 2017

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One of the major challenges in the preparation of magnetic nanoparticles is to minimize the aggregation of the obtained nanoparticles. In addition, the presence of functional groups on the surface of the magnetic nanoparticles and the allowance of further functionalizing of these particles with drugs and therapeutic agents are other drawbacks. Functionalized magnetic polyamide 6 composite nanofibers (magnetic PA6) with diameters of 120 and 200 nm were fabricated by electrospinning process. The surface of the magnetic particles was functionalized with polyethylenimine (PEI), 3-aminopropyltriethoxysilane (APTS), polyethylene glycol, and tetraethoxysilane on an individual basis. The dispersion of magnetic nanoparticles within the polymeric solution of polyamide 6 was created and examined by the electrospinning process. The morphologies and diameter distributions of the resultant nanofibers were investigated by scanning electron microscopy (SEM). The APTS/PA6 solution coated magnetic nanoparticles showed better electrospinning performance than the other structures. The dispersion and the morphology of the magnetic nanoparticles in the PA6 nanofiber matrix were investigated using SEM, energy-dispersive X-ray, and transmission electron microscopy. In addition, the thermal stability and magnetic behavior of these nanoparticles were assessed using thermal gravimetric analysis and vibrating sample magnetometer, respectively. The introduced preparation method in this work not only provides nanofibers with controlled size but also homogeneously dispersed the magnetic nanoparticles within the fibers. The combination of high magnetic properties with outstanding thermal stability as presented by the obtained magnetic nanofibers in this study is very promising in the diagnosis and therapy of cancer. POLYM. COMPOS., 00:000-000,

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“…To avoid nanoparticle agglomerations, iron oxide nanoparticles were surface functionalized using polyethyleneimine (PEI), aminopropyltriethoxysilane (APTS), PEG, and tetraethoxysilane (TEOS) before electrospinning with polyamide (PA) 6. 33,34 Hernández et al used electrospinning to prepare Nd 0.05 Bi 0.95 Fe 0.95 Co 0.05 O 3 fibers from a polymer blend solution, resulting in nanofibers with partly interesting curls. In addition, these fibers revealed conductivity above the usual ferroelectrical materials' range.…”

Section: Magnetic Composite Nanofibersmentioning

confidence: 99%

Most recent developments in electrospun magnetic nanofibers: A review

Błachowicz

Ehrmann

2020

Journal of Engineered Fibers and Fabrics

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One-dimensional materials, such as nanowires, nanotubes, or nanofibers, have attracted more and more attention recently due to their unique physical properties. Their large length-to-diameter ratio creates anisotropic material properties which could not be reached in bulk material. Especially one-dimensional magnetic structures are of high interest since the strong shape anisotropy reveals new magnetization reversal modes and possible applications. One possibility to create magnetic nanofibers in a relatively simple way is offered by electrospinning them from polymer solutions or melts with incorporated magnetic nanoparticles. This review gives an overview of most recent methods of electrospinning magnetic nanofibers, measuring their properties as well as possible applications from basic research to single-cell manipulation to microwave absorption.

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Functionalized Magnetic Nanoparticles and Their Effect on Escherichia coli and Staphylococcus aureus

Cited by 52 publications

References 53 publications

Preparation of Magnetoliposomes with a Green, Low-Cost, Fast and Scalable Methodology and Activity Study against S. aureus and C. freundii Bacterial Strains

Preparation of Magnetoliposomes with a Green, Low-Cost, Fast and Scalable Methodology and Activity Study against S. aureus and C. freundii Bacterial Strains

Electrospun functionalized magnetic polyamide 6 composite nanofiber: Fabrication and stabilization

Most recent developments in electrospun magnetic nanofibers: A review

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